1 |
bearsoft |
1.1 |
#include "clipping3d.h"
|
2 |
|
|
#include "math.h"
|
3 |
|
|
|
4 |
|
|
Clipping3d::Clipping3d(int iScreenWidth, int iScreenHeight, float iZNear, float iZFar)
|
5 |
|
|
{
|
6 |
|
|
zNear=iZNear;
|
7 |
|
|
zFar=iZFar;
|
8 |
|
|
screenWidth=iScreenWidth;
|
9 |
|
|
screenHeight=iScreenHeight;
|
10 |
|
|
calcPlane(screenWidth,screenHeight);
|
11 |
|
|
|
12 |
|
|
numberOfPolygons=16;
|
13 |
|
|
|
14 |
|
|
tMapareDataList = new ObjectArray<TMapareData>(numberOfPolygons);
|
15 |
|
|
|
16 |
|
|
for ( int i=0; i<numberOfPolygons ; i++)
|
17 |
|
|
{
|
18 |
|
|
tMapareDataList->setObject(new TMapareData(),i);
|
19 |
|
|
}
|
20 |
|
|
}
|
21 |
|
|
|
22 |
|
|
Clipping3d::~Clipping3d()
|
23 |
|
|
{
|
24 |
|
|
if (tMapareDataList != null)
|
25 |
|
|
{
|
26 |
|
|
delete tMapareDataList;
|
27 |
|
|
}
|
28 |
|
|
}
|
29 |
|
|
|
30 |
|
|
//*********************************************************************
|
31 |
|
|
//return the cliped polygons
|
32 |
|
|
//*********************************************************************
|
33 |
|
|
|
34 |
|
|
bool Clipping3d::getClippedData(TPolytri *tPolytri, int step)
|
35 |
|
|
{
|
36 |
|
|
bool event=false;
|
37 |
|
|
|
38 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(step);
|
39 |
|
|
|
40 |
|
|
if ( tMapareData->getexsists() == 1 )
|
41 |
|
|
{
|
42 |
|
|
|
43 |
|
|
float z1=1/tMapareData->getcz(0);
|
44 |
|
|
float z2=1/tMapareData->getcz(1);
|
45 |
|
|
float z3=1/tMapareData->getcz(2);
|
46 |
|
|
|
47 |
|
|
tPolytri->x1=((tMapareData->getcx(0)*screenWidth)*((z1)))+(screenWidth/2);
|
48 |
|
|
tPolytri->x2=((tMapareData->getcx(1)*screenWidth)*((z2)))+(screenWidth/2);
|
49 |
|
|
tPolytri->x3=((tMapareData->getcx(2)*screenWidth)*((z3)))+(screenWidth/2);
|
50 |
|
|
|
51 |
|
|
tPolytri->y1=((tMapareData->getcy(0)*screenHeight)*((z1)))+(screenHeight/2);
|
52 |
|
|
tPolytri->y2=((tMapareData->getcy(1)*screenHeight)*((z2)))+(screenHeight/2);
|
53 |
|
|
tPolytri->y3=((tMapareData->getcy(2)*screenHeight)*((z3)))+(screenHeight/2);
|
54 |
|
|
|
55 |
|
|
int sant=removePolygon2d(tPolytri);
|
56 |
|
|
|
57 |
|
|
if ( sant == 3 )
|
58 |
|
|
{
|
59 |
|
|
|
60 |
|
|
tPolytri->z1=tMapareData->getcz(0);
|
61 |
|
|
tPolytri->z2=tMapareData->getcz(1);
|
62 |
|
|
tPolytri->z3=tMapareData->getcz(2);
|
63 |
|
|
|
64 |
|
|
tPolytri->u1=tMapareData->getu(0)*256;
|
65 |
|
|
tPolytri->u2=tMapareData->getu(1)*256;
|
66 |
|
|
tPolytri->u3=tMapareData->getu(2)*256;
|
67 |
|
|
|
68 |
|
|
tPolytri->v1=tMapareData->getv(0)*256;
|
69 |
|
|
tPolytri->v2=tMapareData->getv(1)*256;
|
70 |
|
|
tPolytri->v3=tMapareData->getv(2)*256;
|
71 |
|
|
|
72 |
|
|
event=true;
|
73 |
|
|
}
|
74 |
|
|
}
|
75 |
|
|
|
76 |
|
|
return event;
|
77 |
|
|
}
|
78 |
|
|
|
79 |
|
|
//*********************************************************************
|
80 |
|
|
//clip against 6 planes
|
81 |
|
|
//*********************************************************************
|
82 |
|
|
|
83 |
|
|
void Clipping3d::clipPolygonAgainst6Planes(Object3d *object3d, int step)
|
84 |
|
|
{
|
85 |
|
|
int pos1=step*3+0;
|
86 |
|
|
int pos2=step*3+1;
|
87 |
|
|
int pos3=step*3+2;
|
88 |
|
|
|
89 |
|
|
int position1=object3d->getpoints(pos1);
|
90 |
|
|
int position2=object3d->getpoints(pos2);
|
91 |
|
|
int position3=object3d->getpoints(pos3);
|
92 |
|
|
|
93 |
|
|
for ( int ex=0; ex<numberOfPolygons ; ex++ )
|
94 |
|
|
{
|
95 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(ex);
|
96 |
|
|
tMapareData->setexsists(0);
|
97 |
|
|
}
|
98 |
|
|
|
99 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(0);
|
100 |
|
|
|
101 |
|
|
tMapareData->setexsists(1);
|
102 |
|
|
|
103 |
|
|
tMapareData->setcx(object3d->getx(position1),0);
|
104 |
|
|
tMapareData->setcy(object3d->gety(position1),0);
|
105 |
|
|
tMapareData->setcz(object3d->getz(position1),0);
|
106 |
|
|
|
107 |
|
|
tMapareData->setcx(object3d->getx(position2),1);
|
108 |
|
|
tMapareData->setcy(object3d->gety(position2),1);
|
109 |
|
|
tMapareData->setcz(object3d->getz(position2),1);
|
110 |
|
|
|
111 |
|
|
tMapareData->setcx(object3d->getx(position3),2);
|
112 |
|
|
tMapareData->setcy(object3d->gety(position3),2);
|
113 |
|
|
tMapareData->setcz(object3d->getz(position3),2);
|
114 |
|
|
|
115 |
|
|
tMapareData->setu(object3d->getvu(pos1),0);
|
116 |
|
|
tMapareData->setv(object3d->getvv(pos1),0);
|
117 |
|
|
tMapareData->setg(object3d->getgouraud(pos1),0);
|
118 |
|
|
|
119 |
|
|
tMapareData->setu(object3d->getvu(pos2),1);
|
120 |
|
|
tMapareData->setv(object3d->getvv(pos2),1);
|
121 |
|
|
tMapareData->setg(object3d->getgouraud(pos2),1);
|
122 |
|
|
|
123 |
|
|
tMapareData->setu(object3d->getvu(pos3),2);
|
124 |
|
|
tMapareData->setv(object3d->getvv(pos3),2);
|
125 |
|
|
tMapareData->setg(object3d->getgouraud(pos3),2);
|
126 |
|
|
|
127 |
|
|
// clip against front z
|
128 |
|
|
|
129 |
|
|
clipZ(tMapareDataList, zNear, 0, 0);
|
130 |
|
|
|
131 |
|
|
tMapareData->setcliped(0);
|
132 |
|
|
tMapareData=tMapareDataList->getObject(1);
|
133 |
|
|
tMapareData->setcliped(0);
|
134 |
|
|
|
135 |
|
|
//clip against back z
|
136 |
|
|
|
137 |
|
|
for ( int ipc=0 ; ipc<numberOfPolygons ; ipc++ )
|
138 |
|
|
{
|
139 |
|
|
tMapareData=tMapareDataList->getObject(ipc);
|
140 |
|
|
|
141 |
|
|
if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
|
142 |
|
|
{
|
143 |
|
|
clipZ(tMapareDataList, zFar, ipc, 1);
|
144 |
|
|
}
|
145 |
|
|
}
|
146 |
|
|
|
147 |
|
|
clearSetCliped(tMapareDataList);
|
148 |
|
|
|
149 |
|
|
// clip against xleft
|
150 |
|
|
|
151 |
|
|
float s=xpangs;
|
152 |
|
|
float c=xpangc;
|
153 |
|
|
|
154 |
|
|
planex=s;
|
155 |
|
|
planey=0;
|
156 |
|
|
planez=c;
|
157 |
|
|
planedist=0;
|
158 |
|
|
|
159 |
|
|
|
160 |
|
|
for ( int pc=0 ; pc<numberOfPolygons ; pc++ )
|
161 |
|
|
{
|
162 |
|
|
tMapareData=tMapareDataList->getObject(pc);
|
163 |
|
|
|
164 |
|
|
if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
|
165 |
|
|
{
|
166 |
|
|
clipXY(tMapareDataList, screenWidth, pc);
|
167 |
|
|
}
|
168 |
|
|
}
|
169 |
|
|
|
170 |
|
|
// clip against xright
|
171 |
|
|
|
172 |
|
|
clearSetCliped(tMapareDataList);
|
173 |
|
|
|
174 |
|
|
planex=-s;
|
175 |
|
|
|
176 |
|
|
for ( int pc2=0 ; pc2<numberOfPolygons ; pc2++ )
|
177 |
|
|
{
|
178 |
|
|
tMapareData=tMapareDataList->getObject(pc2);
|
179 |
|
|
|
180 |
|
|
if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
|
181 |
|
|
{
|
182 |
|
|
clipXY(tMapareDataList, screenWidth, pc2);
|
183 |
|
|
}
|
184 |
|
|
}
|
185 |
|
|
|
186 |
|
|
// clip against ytop
|
187 |
|
|
|
188 |
|
|
clearSetCliped(tMapareDataList);
|
189 |
|
|
|
190 |
|
|
s=ypangs;
|
191 |
|
|
c=ypangc;
|
192 |
|
|
|
193 |
|
|
planex=0;
|
194 |
|
|
planey=s;
|
195 |
|
|
planez=c;
|
196 |
|
|
planedist=0;
|
197 |
|
|
|
198 |
|
|
for ( int pc3=0 ; pc3<numberOfPolygons ; pc3++ )
|
199 |
|
|
{
|
200 |
|
|
tMapareData=tMapareDataList->getObject(pc3);
|
201 |
|
|
|
202 |
|
|
if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
|
203 |
|
|
{
|
204 |
|
|
clipXY(tMapareDataList, screenWidth, pc3);
|
205 |
|
|
}
|
206 |
|
|
}
|
207 |
|
|
|
208 |
|
|
// clip against ybottom
|
209 |
|
|
|
210 |
|
|
clearSetCliped(tMapareDataList);
|
211 |
|
|
planey=-s;
|
212 |
|
|
|
213 |
|
|
for ( int pc4=0 ; pc4<numberOfPolygons ; pc4++ )
|
214 |
|
|
{
|
215 |
|
|
tMapareData=tMapareDataList->getObject(pc4);
|
216 |
|
|
|
217 |
|
|
if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
|
218 |
|
|
{
|
219 |
|
|
clipXY(tMapareDataList, screenWidth, pc4);
|
220 |
|
|
}
|
221 |
|
|
}
|
222 |
|
|
|
223 |
|
|
// removepolygon(tmapare_);
|
224 |
|
|
|
225 |
|
|
}
|
226 |
|
|
|
227 |
|
|
//*********************************************************************
|
228 |
|
|
//reset all clip polygons
|
229 |
|
|
//*********************************************************************
|
230 |
|
|
|
231 |
|
|
void Clipping3d::clearSetCliped(ObjectArray<TMapareData> *tMapareDataList)
|
232 |
|
|
{
|
233 |
|
|
for ( int ex=0; ex<numberOfPolygons ; ex++ )
|
234 |
|
|
{
|
235 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(ex);
|
236 |
|
|
tMapareData->setcliped(0);
|
237 |
|
|
}
|
238 |
|
|
}
|
239 |
|
|
|
240 |
|
|
//*********************************************************************
|
241 |
|
|
//calc x,y clip planes
|
242 |
|
|
//*********************************************************************
|
243 |
|
|
|
244 |
|
|
void Clipping3d::calcPlane(int screenWidth, int screenHeight)
|
245 |
|
|
{
|
246 |
|
|
float xsize=(float)screenWidth;
|
247 |
|
|
|
248 |
|
|
float ysize=(float)screenHeight;
|
249 |
|
|
|
250 |
|
|
float xpang=(float)atan(2.0f/2.0f*((xsize))/(((xsize-2)*0.5f)-1.0f));
|
251 |
|
|
|
252 |
|
|
float ypang=(float)atan(2.0f/2.0f*((ysize))/(((ysize-1)*0.5f)-1.0f));
|
253 |
|
|
|
254 |
|
|
xpangs=(float)sin(xpang);
|
255 |
|
|
|
256 |
|
|
xpangc=(float)cos(xpang);
|
257 |
|
|
|
258 |
|
|
ypangs=(float)sin(ypang);
|
259 |
|
|
|
260 |
|
|
ypangc=(float)cos(ypang);
|
261 |
|
|
}
|
262 |
|
|
|
263 |
|
|
//*********************************************************************
|
264 |
|
|
//remove polygons that is not visibly
|
265 |
|
|
//*********************************************************************
|
266 |
|
|
|
267 |
|
|
int Clipping3d::removePolygon2d(TPolytri *tPolytri)
|
268 |
|
|
{
|
269 |
|
|
if (tPolytri->x1 >= (screenWidth-1) )
|
270 |
|
|
{
|
271 |
|
|
tPolytri->x1=(float)(screenWidth-1);
|
272 |
|
|
}
|
273 |
|
|
|
274 |
|
|
if (tPolytri->x2 >= (screenWidth-1) )
|
275 |
|
|
{
|
276 |
|
|
tPolytri->x2=(float)(screenWidth-1);
|
277 |
|
|
}
|
278 |
|
|
|
279 |
|
|
if (tPolytri->x3 >= (screenWidth-1) )
|
280 |
|
|
{
|
281 |
|
|
tPolytri->x3=(float)(screenWidth-1);
|
282 |
|
|
}
|
283 |
|
|
|
284 |
|
|
if (tPolytri->y1 >= (screenHeight-1) )
|
285 |
|
|
{
|
286 |
|
|
tPolytri->y1=(float)(screenHeight-1);
|
287 |
|
|
}
|
288 |
|
|
|
289 |
|
|
if (tPolytri->y2 >= (screenHeight-1) )
|
290 |
|
|
{
|
291 |
|
|
tPolytri->y2=(float)(screenHeight-1);
|
292 |
|
|
}
|
293 |
|
|
|
294 |
|
|
if (tPolytri->y3 >= (screenHeight-1) )
|
295 |
|
|
{
|
296 |
|
|
tPolytri->y3=(float)(screenHeight-1);
|
297 |
|
|
}
|
298 |
|
|
|
299 |
|
|
if (tPolytri->x1 < 1 )
|
300 |
|
|
{
|
301 |
|
|
tPolytri->x1=1;
|
302 |
|
|
}
|
303 |
|
|
|
304 |
|
|
if (tPolytri->x2 < 1 )
|
305 |
|
|
{
|
306 |
|
|
tPolytri->x2=1;
|
307 |
|
|
}
|
308 |
|
|
|
309 |
|
|
if (tPolytri->x3 < 1 )
|
310 |
|
|
{
|
311 |
|
|
tPolytri->x3=1;
|
312 |
|
|
}
|
313 |
|
|
|
314 |
|
|
if (tPolytri->y1 < 1 )
|
315 |
|
|
{
|
316 |
|
|
tPolytri->y1=1;
|
317 |
|
|
}
|
318 |
|
|
|
319 |
|
|
if (tPolytri->y2 < 1 )
|
320 |
|
|
{
|
321 |
|
|
tPolytri->y2=1;
|
322 |
|
|
}
|
323 |
|
|
|
324 |
|
|
if (tPolytri->y3 < 1 )
|
325 |
|
|
{
|
326 |
|
|
tPolytri->y3=1;
|
327 |
|
|
}
|
328 |
|
|
|
329 |
|
|
int sant=0;
|
330 |
|
|
|
331 |
|
|
if ( tPolytri->x1 >= 1 && tPolytri->x1 < screenWidth && tPolytri->y1 >= 1 && tPolytri->y1 < screenHeight )
|
332 |
|
|
{
|
333 |
|
|
sant++;
|
334 |
|
|
}
|
335 |
|
|
|
336 |
|
|
if ( tPolytri->x2 >= 1 && tPolytri->x2 < screenWidth && tPolytri->y2 >= 1 && tPolytri->y2 < screenHeight )
|
337 |
|
|
{
|
338 |
|
|
sant++;
|
339 |
|
|
}
|
340 |
|
|
|
341 |
|
|
if ( tPolytri->x3 >= 1 && tPolytri->x3 < screenWidth && tPolytri->y3 >= 1 && tPolytri->y3 < screenHeight )
|
342 |
|
|
{
|
343 |
|
|
sant++;
|
344 |
|
|
}
|
345 |
|
|
|
346 |
|
|
return sant;
|
347 |
|
|
}
|
348 |
|
|
|
349 |
|
|
void Clipping3d::removePolygon(ObjectArray<TMapareData> *tMapareDataList )
|
350 |
|
|
{
|
351 |
|
|
for ( int ex=0; ex<numberOfPolygons ; ex++ )
|
352 |
|
|
{
|
353 |
|
|
TMapareData *tMapareData=((TMapareData*)tMapareDataList->getObject(ex));
|
354 |
|
|
|
355 |
|
|
if ( tMapareData->getexsists() == 1 )
|
356 |
|
|
{
|
357 |
|
|
if (removePolygonXY(tMapareData) != 0)
|
358 |
|
|
{
|
359 |
|
|
tMapareData->setexsists(0);
|
360 |
|
|
}
|
361 |
|
|
}
|
362 |
|
|
}
|
363 |
|
|
}
|
364 |
|
|
|
365 |
|
|
int Clipping3d::removePolygon(TMapareData *tMapareData)
|
366 |
|
|
{
|
367 |
|
|
int ex=0;
|
368 |
|
|
|
369 |
|
|
for ( int cp=0; cp<3; cp++ )
|
370 |
|
|
{
|
371 |
|
|
tMapareData->curdot[cp]=(tMapareData->getcx(cp)*planex)+(tMapareData->getcy(cp)*planey)+(tMapareData->getcz(cp)*planez);
|
372 |
|
|
}
|
373 |
|
|
|
374 |
|
|
for ( int cp2=0; cp2<3 ;cp2++ )
|
375 |
|
|
{
|
376 |
|
|
if ( tMapareData->curdot[cp2]+0.1f < planedist )
|
377 |
|
|
{
|
378 |
|
|
ex++;
|
379 |
|
|
}
|
380 |
|
|
}
|
381 |
|
|
|
382 |
|
|
return ex;
|
383 |
|
|
}
|
384 |
|
|
|
385 |
|
|
int Clipping3d::removePolygonXY(TMapareData *tMapareData)
|
386 |
|
|
{
|
387 |
|
|
int ex=0;
|
388 |
|
|
|
389 |
|
|
float s=xpangs;
|
390 |
|
|
float c=xpangc;
|
391 |
|
|
|
392 |
|
|
planex=s;
|
393 |
|
|
planey=0;
|
394 |
|
|
planez=c;
|
395 |
|
|
planedist=0;
|
396 |
|
|
|
397 |
|
|
ex+=removePolygon(tMapareData);
|
398 |
|
|
|
399 |
|
|
planex=-s;
|
400 |
|
|
|
401 |
|
|
ex+=removePolygon(tMapareData);
|
402 |
|
|
|
403 |
|
|
s=ypangs;
|
404 |
|
|
c=ypangc;
|
405 |
|
|
|
406 |
|
|
planex=0;
|
407 |
|
|
planey=s;
|
408 |
|
|
planez=c;
|
409 |
|
|
planedist=0;
|
410 |
|
|
|
411 |
|
|
ex+=removePolygon(tMapareData);
|
412 |
|
|
planey=-s;
|
413 |
|
|
|
414 |
|
|
ex+=removePolygon(tMapareData);
|
415 |
|
|
|
416 |
|
|
return ex;
|
417 |
|
|
}
|
418 |
|
|
|
419 |
|
|
//*********************************************************************
|
420 |
|
|
//clip against x,y
|
421 |
|
|
//*********************************************************************
|
422 |
|
|
|
423 |
|
|
void Clipping3d::clipXY(ObjectArray<TMapareData> *tMapareDataList , int screenwidth, int pc)
|
424 |
|
|
{
|
425 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(pc);
|
426 |
|
|
|
427 |
|
|
for ( int cp=0; cp<3; cp++ )
|
428 |
|
|
{
|
429 |
|
|
tMapareData->curdot[cp]=(tMapareData->getcx(cp)*planex)+(tMapareData->getcy(cp)*planey)+(tMapareData->getcz(cp)*planez);
|
430 |
|
|
}
|
431 |
|
|
|
432 |
|
|
float x=0;
|
433 |
|
|
int ap=0;
|
434 |
|
|
int position[4]={0,0,0,0};
|
435 |
|
|
int r=1;
|
436 |
|
|
|
437 |
|
|
for ( int pp=0; pp<3 ; pp++ )
|
438 |
|
|
{
|
439 |
|
|
if ( tMapareData->curdot[pp] >= planedist )
|
440 |
|
|
{
|
441 |
|
|
position[0]=pp;
|
442 |
|
|
ap++;
|
443 |
|
|
}
|
444 |
|
|
else
|
445 |
|
|
{
|
446 |
|
|
position[r]=pp;
|
447 |
|
|
r++;
|
448 |
|
|
}
|
449 |
|
|
}
|
450 |
|
|
|
451 |
|
|
if ( ap == 1 )
|
452 |
|
|
{
|
453 |
|
|
int n=0;
|
454 |
|
|
int k=1;
|
455 |
|
|
|
456 |
|
|
float f=((tMapareData->curdot[position[k]])/(tMapareData->curdot[position[n]]-tMapareData->curdot[position[k]]));
|
457 |
|
|
interpolateClipXY(tMapareData, f , k, n, position,x);
|
458 |
|
|
|
459 |
|
|
n=0;
|
460 |
|
|
k=2;
|
461 |
|
|
|
462 |
|
|
f=((tMapareData->curdot[position[k]])/(tMapareData->curdot[position[n]]-tMapareData->curdot[position[k]]));
|
463 |
|
|
interpolateClipXY(tMapareData, f , k, n, position,x);
|
464 |
|
|
}
|
465 |
|
|
|
466 |
|
|
ap=0;
|
467 |
|
|
r=1;
|
468 |
|
|
|
469 |
|
|
for ( int pp2=0; pp2<3 ; pp2++ )
|
470 |
|
|
{
|
471 |
|
|
if ( tMapareData->curdot[pp2] < planedist )
|
472 |
|
|
{
|
473 |
|
|
position[0]=pp2;
|
474 |
|
|
ap++;
|
475 |
|
|
}
|
476 |
|
|
else
|
477 |
|
|
{
|
478 |
|
|
position[r]=pp2;
|
479 |
|
|
r++;
|
480 |
|
|
}
|
481 |
|
|
}
|
482 |
|
|
|
483 |
|
|
if ( ap == 1 )
|
484 |
|
|
{
|
485 |
|
|
int pc2=newPolygonClipXY(tMapareDataList,pc);
|
486 |
|
|
TMapareData *tMapareData2=((TMapareData*)tMapareDataList->getObject(pc2));
|
487 |
|
|
|
488 |
|
|
int n=1;
|
489 |
|
|
int k=0;
|
490 |
|
|
|
491 |
|
|
float f=((tMapareData->curdot[position[k]])/(tMapareData->curdot[position[n]]-tMapareData->curdot[position[k]]));
|
492 |
|
|
interpolateClipXY(tMapareData, f , k, n, position,x);
|
493 |
|
|
|
494 |
|
|
n=2;
|
495 |
|
|
k=0;
|
496 |
|
|
|
497 |
|
|
f=((tMapareData2->curdot[position[k]]-planedist)/(tMapareData2->curdot[position[n]]-tMapareData2->curdot[position[k]]));
|
498 |
|
|
interpolateClipXY(tMapareData2, f , k, n, position,x);
|
499 |
|
|
|
500 |
|
|
copyPolygonPointClipXY(tMapareData2, tMapareData, position[1], position[0]);
|
501 |
|
|
}
|
502 |
|
|
}
|
503 |
|
|
|
504 |
|
|
//*********************************************************************
|
505 |
|
|
// interpolate x,y,z,u,v,g value against the x,y clip plane
|
506 |
|
|
//*********************************************************************
|
507 |
|
|
|
508 |
|
|
void Clipping3d::interpolateClipXY(TMapareData *tMapareData, float f , int k, int n, int *position, float x)
|
509 |
|
|
{
|
510 |
|
|
if ( f < 0 )
|
511 |
|
|
{
|
512 |
|
|
f*=-1;
|
513 |
|
|
}
|
514 |
|
|
|
515 |
|
|
float z=tMapareData->getcz(position[n]);
|
516 |
|
|
float z2=tMapareData->getcz(position[k]);
|
517 |
|
|
|
518 |
|
|
float xs=tMapareData->getcx(position[n])-tMapareData->getcx(position[k]);
|
519 |
|
|
float ys=tMapareData->getcy(position[n])-tMapareData->getcy(position[k]);
|
520 |
|
|
float zs=z-z2;
|
521 |
|
|
float us=tMapareData->getu(position[n])-tMapareData->getu(position[k]);
|
522 |
|
|
float vs=tMapareData->getv(position[n])-tMapareData->getv(position[k]);
|
523 |
|
|
float gs=tMapareData->getg(position[n])-tMapareData->getg(position[k]);
|
524 |
|
|
|
525 |
|
|
tMapareData->setcx(tMapareData->getcx(position[k])+(f*(xs)),position[k]);
|
526 |
|
|
tMapareData->setcy(tMapareData->getcy(position[k])+(f*(ys)),position[k]);
|
527 |
|
|
z2+=(f*(zs));
|
528 |
|
|
tMapareData->setcz(z2,position[k]);
|
529 |
|
|
tMapareData->setu(tMapareData->getu(position[k])+((f)*(us)),position[k]);
|
530 |
|
|
tMapareData->setv(tMapareData->getv(position[k])+((f)*(vs)),position[k]);
|
531 |
|
|
tMapareData->setg(tMapareData->getg(position[k])+((f)*(gs)),position[k]);
|
532 |
|
|
}
|
533 |
|
|
|
534 |
|
|
//*********************************************************************
|
535 |
|
|
//create a new polygon
|
536 |
|
|
//*********************************************************************
|
537 |
|
|
|
538 |
|
|
int Clipping3d::newPolygonClipXY(ObjectArray<TMapareData> *tMapareDataList, int e )
|
539 |
|
|
{
|
540 |
|
|
int t=0;
|
541 |
|
|
int end=0;
|
542 |
|
|
int tempt;
|
543 |
|
|
|
544 |
|
|
while ( t < numberOfPolygons && end == 0)
|
545 |
|
|
{
|
546 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
547 |
|
|
|
548 |
|
|
if ( tMapareData->getexsists() == 0 )
|
549 |
|
|
{
|
550 |
|
|
tMapareData->setexsists(1);
|
551 |
|
|
tMapareData->setcliped(1);
|
552 |
|
|
end=1;
|
553 |
|
|
tempt=t;
|
554 |
|
|
}
|
555 |
|
|
|
556 |
|
|
t++;
|
557 |
|
|
}
|
558 |
|
|
|
559 |
|
|
t=tempt;
|
560 |
|
|
|
561 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
562 |
|
|
TMapareData *tMapareData2=tMapareDataList->getObject(e);
|
563 |
|
|
|
564 |
|
|
for ( int i=0 ; i<3 ; i++ )
|
565 |
|
|
{
|
566 |
|
|
tMapareData->setcx(tMapareData2->getcx(i),i);
|
567 |
|
|
tMapareData->setcy(tMapareData2->getcy(i),i);
|
568 |
|
|
tMapareData->setcz(tMapareData2->getcz(i),i);
|
569 |
|
|
tMapareData->setu(tMapareData2->getu(i),i);
|
570 |
|
|
tMapareData->setv(tMapareData2->getv(i),i);
|
571 |
|
|
tMapareData->setg(tMapareData2->getg(i),i);
|
572 |
|
|
tMapareData->curdot[i]=tMapareData2->curdot[i];
|
573 |
|
|
}
|
574 |
|
|
|
575 |
|
|
return t;
|
576 |
|
|
}
|
577 |
|
|
|
578 |
|
|
//*********************************************************************
|
579 |
|
|
//copy clipxy polygon
|
580 |
|
|
//*********************************************************************
|
581 |
|
|
|
582 |
|
|
void Clipping3d::copyPolygonPointClipXY(TMapareData *tMapareData, TMapareData *tMapareData2, int i, int i2)
|
583 |
|
|
{
|
584 |
|
|
tMapareData->setcx(tMapareData2->getcx(i2),i);
|
585 |
|
|
tMapareData->setcy(tMapareData2->getcy(i2),i);
|
586 |
|
|
tMapareData->setcz(tMapareData2->getcz(i2),i);
|
587 |
|
|
tMapareData->setu(tMapareData2->getu(i2),i);
|
588 |
|
|
tMapareData->setv(tMapareData2->getv(i2),i);
|
589 |
|
|
tMapareData->setg(tMapareData2->getg(i2),i);
|
590 |
|
|
tMapareData->curdot[i]=tMapareData2->curdot[i2];
|
591 |
|
|
}
|
592 |
|
|
|
593 |
|
|
//*********************************************************************
|
594 |
|
|
//clip against z
|
595 |
|
|
//*********************************************************************
|
596 |
|
|
|
597 |
|
|
void Clipping3d::clipZ(ObjectArray<TMapareData> *tMapareDataList, float zNearOrFar, int pc , int choise)
|
598 |
|
|
{
|
599 |
|
|
int ap=0;
|
600 |
|
|
int position[4]={0,0,0,0};
|
601 |
|
|
int r=1;
|
602 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(pc);
|
603 |
|
|
|
604 |
|
|
if ( choise == 0 )
|
605 |
|
|
{
|
606 |
|
|
for ( int pp=0; pp<3 ; pp++ )
|
607 |
|
|
{
|
608 |
|
|
if (tMapareData->getcz(pp) >= zNearOrFar)
|
609 |
|
|
{
|
610 |
|
|
position[0]=pp;
|
611 |
|
|
ap++;
|
612 |
|
|
}
|
613 |
|
|
else
|
614 |
|
|
{
|
615 |
|
|
position[r]=pp;
|
616 |
|
|
r++;
|
617 |
|
|
}
|
618 |
|
|
}
|
619 |
|
|
}
|
620 |
|
|
else
|
621 |
|
|
{
|
622 |
|
|
for ( int pp=0; pp<3 ; pp++ )
|
623 |
|
|
{
|
624 |
|
|
|
625 |
|
|
if ( zNearOrFar >= tMapareData->getcz(pp) )
|
626 |
|
|
{
|
627 |
|
|
position[0]=pp;
|
628 |
|
|
ap++;
|
629 |
|
|
}
|
630 |
|
|
else
|
631 |
|
|
{
|
632 |
|
|
position[r]=pp;
|
633 |
|
|
r++;
|
634 |
|
|
}
|
635 |
|
|
}
|
636 |
|
|
}
|
637 |
|
|
|
638 |
|
|
if ( ap == 1 )
|
639 |
|
|
{
|
640 |
|
|
int n;
|
641 |
|
|
int k;
|
642 |
|
|
|
643 |
|
|
n=0;
|
644 |
|
|
k=1;
|
645 |
|
|
|
646 |
|
|
float z=tMapareData->getcz(position[k]);
|
647 |
|
|
float z2=tMapareData->getcz(position[n]);
|
648 |
|
|
|
649 |
|
|
z2=z2-z;
|
650 |
|
|
float tempzc=zNearOrFar;
|
651 |
|
|
tempzc-=z;
|
652 |
|
|
tempzc/=z2;
|
653 |
|
|
|
654 |
|
|
calcClipZ(tMapareDataList, zNearOrFar, pc , k, n, position, tempzc);
|
655 |
|
|
|
656 |
|
|
n=0;
|
657 |
|
|
k=2;
|
658 |
|
|
|
659 |
|
|
z=tMapareData->getcz(position[k]);
|
660 |
|
|
z2=tMapareData->getcz(position[n]);
|
661 |
|
|
|
662 |
|
|
z2=z2-z;
|
663 |
|
|
tempzc=zNearOrFar;
|
664 |
|
|
tempzc-=z;
|
665 |
|
|
tempzc/=z2;
|
666 |
|
|
|
667 |
|
|
calcClipZ(tMapareDataList, zNearOrFar, pc , k, n, position, tempzc);
|
668 |
|
|
}
|
669 |
|
|
|
670 |
|
|
|
671 |
|
|
ap=0;
|
672 |
|
|
r=1;
|
673 |
|
|
|
674 |
|
|
if ( choise == 0 )
|
675 |
|
|
{
|
676 |
|
|
for ( int pp2=0; pp2<3 ; pp2++ )
|
677 |
|
|
{
|
678 |
|
|
if ( tMapareData->getcz(pp2) < zNearOrFar )
|
679 |
|
|
{
|
680 |
|
|
position[0]=pp2;
|
681 |
|
|
ap++;
|
682 |
|
|
}
|
683 |
|
|
else
|
684 |
|
|
{
|
685 |
|
|
position[r]=pp2;
|
686 |
|
|
r++;
|
687 |
|
|
}
|
688 |
|
|
}
|
689 |
|
|
}
|
690 |
|
|
else
|
691 |
|
|
{
|
692 |
|
|
for ( int pp2=0; pp2<3 ; pp2++ )
|
693 |
|
|
{
|
694 |
|
|
if ( zNearOrFar < tMapareData->getcz(pp2) )
|
695 |
|
|
{
|
696 |
|
|
position[0]=pp2;
|
697 |
|
|
ap++;
|
698 |
|
|
}
|
699 |
|
|
else
|
700 |
|
|
{
|
701 |
|
|
position[r]=pp2;
|
702 |
|
|
r++;
|
703 |
|
|
}
|
704 |
|
|
}
|
705 |
|
|
}
|
706 |
|
|
|
707 |
|
|
if ( ap == 1 )
|
708 |
|
|
{
|
709 |
|
|
int pc2=newPolygonClipZ(tMapareDataList,pc);
|
710 |
|
|
TMapareData *tMapareData2=tMapareDataList->getObject(pc2);
|
711 |
|
|
|
712 |
|
|
int n;
|
713 |
|
|
int k;
|
714 |
|
|
|
715 |
|
|
n=1;
|
716 |
|
|
k=0;
|
717 |
|
|
|
718 |
|
|
float z=tMapareData->getcz(position[k]);
|
719 |
|
|
float z2=tMapareData->getcz(position[n]);
|
720 |
|
|
|
721 |
|
|
z2=z2-z;
|
722 |
|
|
float tempzc=zNearOrFar;
|
723 |
|
|
tempzc-=z;
|
724 |
|
|
tempzc/=z2;
|
725 |
|
|
|
726 |
|
|
calcClipZ(tMapareDataList, zNearOrFar, pc , k, n, position, tempzc);
|
727 |
|
|
|
728 |
|
|
n=2;
|
729 |
|
|
k=0;
|
730 |
|
|
|
731 |
|
|
z=tMapareData2->getcz(position[k]);
|
732 |
|
|
z2=tMapareData2->getcz(position[n]);
|
733 |
|
|
|
734 |
|
|
z2=z2-z;
|
735 |
|
|
tempzc=zNearOrFar;
|
736 |
|
|
tempzc-=z;
|
737 |
|
|
tempzc/=z2;
|
738 |
|
|
|
739 |
|
|
calcClipZ(tMapareDataList, zNearOrFar, pc2 , k, n, position, tempzc);
|
740 |
|
|
|
741 |
|
|
copyPolygonPointClipZ(tMapareData2, tMapareData, position[1], position[0]);
|
742 |
|
|
}
|
743 |
|
|
}
|
744 |
|
|
|
745 |
|
|
//*********************************************************************
|
746 |
|
|
//calc interpolation z
|
747 |
|
|
//*********************************************************************
|
748 |
|
|
|
749 |
|
|
void Clipping3d::calcClipZ(ObjectArray<TMapareData> *tMapareDataList, float zNearOrFar, int pc , int k, int n, int *position, float tempzc)
|
750 |
|
|
{
|
751 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(pc);
|
752 |
|
|
|
753 |
|
|
tMapareData->setcx(interpolateClipZ(tMapareData->getcx(position[k]),tMapareData->getcx(position[n]),tempzc),position[k]);
|
754 |
|
|
tMapareData->setcy(interpolateClipZ(tMapareData->getcy(position[k]),tMapareData->getcy(position[n]),tempzc),position[k]);
|
755 |
|
|
tMapareData->setcz(zNearOrFar,position[k]);
|
756 |
|
|
tMapareData->setu(interpolateClipZ(tMapareData->getu(position[k]),tMapareData->getu(position[n]),tempzc),position[k]);
|
757 |
|
|
tMapareData->setv(interpolateClipZ(tMapareData->getv(position[k]),tMapareData->getv(position[n]),tempzc),position[k]);
|
758 |
|
|
tMapareData->setg(interpolateClipZ(tMapareData->getg(position[k]),tMapareData->getg(position[n]),tempzc),position[k]);
|
759 |
|
|
}
|
760 |
|
|
|
761 |
|
|
//*********************************************************************
|
762 |
|
|
//clip against z
|
763 |
|
|
//*********************************************************************
|
764 |
|
|
|
765 |
|
|
int Clipping3d::newPolygonClipZ(ObjectArray<TMapareData> *tMapareDataList, int e )
|
766 |
|
|
{
|
767 |
|
|
int t=0;
|
768 |
|
|
int end=0;
|
769 |
|
|
int tempt;
|
770 |
|
|
|
771 |
|
|
while ( t < numberOfPolygons && end == 0)
|
772 |
|
|
{
|
773 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
774 |
|
|
|
775 |
|
|
if ( tMapareData->getexsists() == 0 )
|
776 |
|
|
{
|
777 |
|
|
tMapareData->setexsists(1);
|
778 |
|
|
tMapareData->setcliped(1);
|
779 |
|
|
end=1;
|
780 |
|
|
tempt=t;
|
781 |
|
|
}
|
782 |
|
|
|
783 |
|
|
t++;
|
784 |
|
|
}
|
785 |
|
|
|
786 |
|
|
t=tempt;
|
787 |
|
|
|
788 |
|
|
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
789 |
|
|
TMapareData *tMapareData2=tMapareDataList->getObject(e);
|
790 |
|
|
|
791 |
|
|
for ( int i=0 ; i<3 ; i++ )
|
792 |
|
|
{
|
793 |
|
|
tMapareData->setcx(tMapareData2->getcx(i),i);
|
794 |
|
|
tMapareData->setcy(tMapareData2->getcy(i),i);
|
795 |
|
|
tMapareData->setcz(tMapareData2->getcz(i),i);
|
796 |
|
|
tMapareData->setu(tMapareData2->getu(i),i);
|
797 |
|
|
tMapareData->setv(tMapareData2->getv(i),i);
|
798 |
|
|
tMapareData->setg(tMapareData2->getg(i),i);
|
799 |
|
|
tMapareData->curdot[i]=tMapareData2->curdot[i];
|
800 |
|
|
}
|
801 |
|
|
|
802 |
|
|
return t;
|
803 |
|
|
}
|
804 |
|
|
|
805 |
|
|
//*********************************************************************
|
806 |
|
|
//interpolate z
|
807 |
|
|
//*********************************************************************
|
808 |
|
|
|
809 |
|
|
float Clipping3d::interpolateClipZ(float temp, float temp2, float d7f)
|
810 |
|
|
{
|
811 |
|
|
temp2=(temp2-temp)*d7f;
|
812 |
|
|
temp2+=temp;
|
813 |
|
|
return temp2;
|
814 |
|
|
}
|
815 |
|
|
|
816 |
|
|
//*********************************************************************
|
817 |
|
|
//copy z polygonpoint
|
818 |
|
|
//*********************************************************************
|
819 |
|
|
|
820 |
|
|
void Clipping3d::copyPolygonPointClipZ(TMapareData *tMapareData, TMapareData *tMapareData2, int i, int i2)
|
821 |
|
|
{
|
822 |
|
|
tMapareData->setcx(tMapareData2->getcx(i2),i);
|
823 |
|
|
tMapareData->setcy(tMapareData2->getcy(i2),i);
|
824 |
|
|
tMapareData->setcz(tMapareData2->getcz(i2),i);
|
825 |
|
|
tMapareData->setu(tMapareData2->getu(i2),i);
|
826 |
|
|
tMapareData->setv(tMapareData2->getv(i2),i);
|
827 |
|
|
tMapareData->setg(tMapareData2->getg(i2),i);
|
828 |
|
|
tMapareData->curdot[i]=tMapareData2->curdot[i2];
|
829 |
|
|
} |